... waterproof membrane 1).Fine UV-resitance, no pollution to environment 2).Easy treaments to the delicate parts of cor Long life waterproof ... for roof construction, subway, bridges, channel tunnel, planted roof, waterproof and drainage system, pools, dam, irrigation system, light steel roof ect ... , No CrackImpermeability(0.3MPa*2h) ImpermeableAnti-punchImpermeable Long life waterproof membrane